Model Description
| HW | 250F | 1 | Optional | Optional | D | VDC |
| ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ |
①Enterprise code: Hangwang Electric
②Serial number: 250F
③Number of contact groups: 1
④Contact form: (Z-conversion type H-normally open type D-normally closed contact)
⑤Mounted type: Retaining bolt installation
⑥Auxiliary function: D/CR Inhibitory protection
⑦Coil voltage: (DC: direct voltage AC: alternating voltage)
Contact parameters
| Contact form | 1Z |
| contact resistance | 100mΩ |
| Contact material | AgSnO2 |
| Contact load (resistive) | 250A 250VAC/30VDC |
Product Technical Parameters
| Contact | Contact form | 1Z |
| Contact load (resistive) | 250A 250VAC/30VDC | |
| Electrical life | ≥3×10⁴ times | |
| Mechanical life | ≥10⁶ times | |
| Contact resistance | ≤100mΩ | |
| Contact material | AgSnO2 | |
| Terminal type | Insulation resistance MΩ | ≥200MΩ(500VDC) |
| Dielectric strength | Between the same pole contacts ≥1000VAC/1min | |
| / | ||
| Between contact and coil ≥2500VAC/1min | ||
| Suction time | ≤25ms | |
| Release time | ≤25ms | |
| Terminal type | Screw type | |
| Coil | Rated coil power | DC: 2.0W AC: 4VA |
Product Size and Installation
Selection Guide
Unless otherwise specified, all load currents indicated on the Hangwang relay case are for resistive loads. Under the rated switching voltage, the allowable current of inductive loads should not exceed 30% of the rated resistive loads, the allowable current of motor loads should not exceed 20% of the rated resistive loads, the allowable current of lamp loads should not exceed 10% of the rated resistive loads, and the allowable current of capacitive loads should not exceed 5% of the rated resistive loads. In order to ensure the reliability of the product, it is recommended that the contact load current value should not exceed 60% – 70% of the steady state current value under the rated load of the product.
| Nature of the load | Inrush current |
| Resistive load | 1 times the steady-state current |
| Sodium lamp load | 1-3 times the steady-state current |
| Mercury-vapor lamp load | 3 times the steady state current |
| Inductive load | 3-5 times the steady-state current |
| Motor load | 3-5 times the steady-state current |
| Voltage load | 3-5 times the steady-state current |
| Incandescent lamp load | 3-5 times the steady-state current |
| Capacitive load | 3-5 times the steady-state current |
